If we have to use Lex or Flex, check whether we found it, first, and if
authorGuy Harris <guy@alum.mit.edu>
Thu, 19 Oct 2006 07:45:10 +0000 (07:45 -0000)
committerGuy Harris <guy@alum.mit.edu>
Thu, 19 Oct 2006 07:45:10 +0000 (07:45 -0000)
commite773247138e940ec0653b424011884a9d3818546
tree007f076377fb6bf2e9dedfe8b959ac4e22a01b62
parent4f5a48c4f62cca7b33fb5757c9538d495de99282
If we have to use Lex or Flex, check whether we found it, first, and if
we didn't, report an error and fail, rather than blithely executing
commands with the command a blank string.

svn path=/trunk/; revision=19602
epan/dfilter/Makefile.am
wiretap/Makefile.am